# -*- coding: utf-8 -*-

L = (
    ['Apple', 'Google', 'Microsoft'],
    ['Java', 'Python', 'Ruby', 'PHP'],
    ['Adam', 'Bart', 'Lisa']
)

print('打印Apple')
print(L[1][0])
print('打印Python')
print(L[1][1])
print('打印Lisa')
print(L[2][2])

L[1][0] = 'Go'
print(L[1][0])
